预约成功
certainly
adv.当然;一定
例句：用作副词 (adv.)
You are certainly a talented artist.
你当然是位有天赋的艺术家。
I'll certainly be most discreet in my conversation.
我在谈话中当然会十分小心的。
He will certainly come.
他一定会来的。
He'll certainly die if you do not send for a doctor right now.
如果你不马上请医生,他一定会死的
